Base | Representation |
---|---|
bin | 10000110010110100… |
… | …011111011000111001 |
3 | 1201112201022101222112 |
4 | 100302310133120321 |
5 | 243412304140131 |
6 | 12141202502105 |
7 | 1205601431156 |
oct | 206264373071 |
9 | 51481271875 |
10 | 18032490041 |
11 | 7713963735 |
12 | 35b3064935 |
13 | 1914b97a67 |
14 | c30c8722d |
15 | 70817502b |
hex | 432d1f639 |
18032490041 has 4 divisors (see below), whose sum is σ = 18033520512. Its totient is φ = 18031459572.
The previous prime is 18032490017. The next prime is 18032490137. The reversal of 18032490041 is 14009423081.
It is a happy number.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14009423081 = 3121 ⋅4488761.
It is a cyclic number.
It is not a de Polignac number, because 18032490041 - 226 = 17965381177 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (18032490001) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 488525 + ... + 524138.
It is an arithmetic number, because the mean of its divisors is an integer number (4508380128).
Almost surely, 218032490041 is an apocalyptic number.
It is an amenable number.
18032490041 is a deficient number, since it is larger than the sum of its proper divisors (1030471).
18032490041 is a wasteful number, since it uses less digits than its factorization.
18032490041 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1030470.
The product of its (nonzero) digits is 6912, while the sum is 32.
The spelling of 18032490041 in words is "eighteen billion, thirty-two million, four hundred ninety thousand, forty-one".
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